Explore topic-wise InterviewSolutions in .

Which of the following is/are the properties of isotopes?

Compare an electron, a proton, and a neutron in respect of their relative masses and charges.

Reducing nature of the hydrides of group 15 follow the order

Why does temperature decrease with altitude?

Which of the following metals, on reaction with acids like HCl does not form bubbles in the solution?

Which gas gets liquified first on cooling air?

Who discovered the electron?

Do lime water absorb carbon dioxide

In Celsius and Farenheit scales of temperature, the lower fixed point is :

On the basis of Thomson's model of an atom, explain how an atom as a whole is neutral.

Why anything can't travel faster than light? 5mark

Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so ?

In Celsius scale, 300 K is equivalent to X ^oC. Value of X is

Name two processes which provide the best evidence for the motion of particles in matter.

Milk of magnesia is a/an:

Name the property of one of the constituents which can be used to separate a mixutre of salt and iodine

What is an ion, anion and cation? Give example for each. [3 MARKS]

Teflon is a polymer of the monomer

What is the Full form of IUPAC?

Which among the following is the chemical symbol for iron?

Which of the following substances give ${\text{H}}^{+}$ ions in aqueous solution?

which among the following are the properties of oxygen ?

If the boiling point of oxygen, argon and nitrogen are -183 C , -186 C and -196 C, which gas forms the liquid first as the air is cooled? Explain the process.

Pick out suspension, colloid, solution. From the given substance:-

Soap solution, CuSO₄ solution, Animal blood, sugar solution, salt solution, Muddy water, Chalk & water solution, Toothpaste, Milk, Starch solution, Mist, Fog, smoke.

The distribution of electrons in an orbit is obtained by ______

Permanent hardness is caused due to:

Highest dipole moment is present in ______

Which of the following can not be called a physical change?

Which of the following symbol does not represent a molecule?

In the Haber's process, Nitrogen and Hydrogen react to form Ammonia.

Which factor increases both the speed of reaction and the amount of Ammonia produced?

Which of the following are properties of anode rays?

Question 3.2

Write a balanced chemical equation and state symbols for the reaction:
Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.

Which of the following is not an example of heterogeneous mixture?

What is formed by physical combination of two or more substances, which retain their identities?

The oxidation state of $S$ in $N{a}_2{S}_2{O}_3$ is

Question 11
Which of the following metals exist in their native state in nature?
(i) $\text{Cu}$
(ii) $\text{Au}$
(iii) $\text{Zn}$
(iv) $\text{Ag}$

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (ii) and (iv)
(d) (iii) and (iv)

Of the four oxoacids of chlorine the strongest oxidising agent in dilute aqueous solution is

Water is a _______ molecule.